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Terminating call setup technique in case of csfb

A technology of call establishment request and circuit switching fallback, which is applied in the direction of location information-based services, network data management, electrical components, etc., and can solve the problems such as the danger of GSM association strategy

Inactive Publication Date: 2016-09-07
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] All of these considerations put in jeopardy the current GSM Association strategy for requiring CSFB as an early roaming solution for Long Term Evolution (LTE) networks

Method used

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  • Terminating call setup technique in case of csfb
  • Terminating call setup technique in case of csfb
  • Terminating call setup technique in case of csfb

Examples

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Embodiment Construction

[0035] In the description of the exemplary embodiments below, for explanatory rather than restrictive purposes, in order to provide a complete understanding of the technology shown herein, specific details (such as a specific sequence of signaling steps) are set forth. It is obvious to those skilled in the art that other embodiments deviating from these specific details can also implement the present technology.

[0036] In addition, those skilled in the art will understand that software functions combined with a programmed microprocessor, application specific integrated circuit (ASIC), digital signal processor (DSP) or general purpose computer can be used to implement the functions and steps explained below. It should also be understood that although the following embodiments are mainly described in the context of methods and devices, the technology shown herein can also be used as a computer program product and as a system including a computer processor and a memory coupled with...

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Abstract

A method is described for controlling the establishment of a terminating call to a UE in a CSFB situation involving a first MSC that pages a UE and a second MSC in which the UE is performing a location update . In one embodiment implementing this technique, the method includes receiving a PRN message from an HLR and forwarding information received in the PRN message to a second MSC.

Description

Technical field [0001] The present disclosure generally relates to circuit switched fallback (CSFB). Specifically, a technique for controlling the establishment and termination of a call to a user equipment (UE) in the case of CSFB is described. Background technique [0002] Currently, CSFB is specified in the Third Generation Partnership Project (3GPP) Technical Specification (TS) 23.272 (for example, see V9.4.0 in June 2010). In simple terms, CSFB can realize: when UE is served by Evolved UMTS Terrestrial Radio Access Network (E-UTRAN), through the reuse of CS infrastructure, voice and other CS domain services (such as , Services related to unstructured supplementary service data (USSD)). Therefore, a UE connected to E-UTRAN and capable of implementing CSFB can use second or third generation (2G or 3G) technology (for example, GPRS / EDGE RAN (GERAN) or UTRAN) to connect to the CS domain. [0003] figure 1 The following exemplary scenario is shown: In the case of CSFB, a UE conn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/08H04W76/02H04W4/02H04W4/029
CPCH04W8/08H04W76/18H04W76/19H04W76/30H04W4/02H04W36/00224H04W4/029H04W8/02H04W36/0022
Inventor 拉尔夫·凯勒卡尔-彼德·兰克安德雷斯·威策尔
Owner TELEFON AB LM ERICSSON (PUBL)
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